摘要：

以浙江某制膜公司的生产废水为研究对象,采用曝气微电解对含DMF、DMAC等强有机溶剂的制膜废水进行预处理。结果表明,曝气微电解最佳pH为2~3,最佳停留时间为120 min,其COD去除率较普通微电解工艺至少提高5%。串联曝气微电解反应器处理中COD去除率存在二次跃迁曲线。历时30 d的稳定运行结果表明,当进水COD为10 000～20 000 mg/L时,COD去除率达52%以上,可以使原水B/C由0.22提高到0.45以上。

关键词: 制膜废水, 曝气, 微电解, 铁炭微电解

Abstract:

The wastewater in a membrane-making Co.,in Zhejiang has been studied.Aeration/micro-electrolysis method is used for treating the membrane-making wastewater which contains strong organic solvents,such as DMF,DMAC and so on.The results show that the best pH of aeration/micro-electrolysis is between 2 and 3,and HRT is 120 min,and the removal rate of COD is at least 5% higher than that by ordinary micro-electrolysis technology.The COD removal rate in the combined aeration/micro-electrolysis reactor has a 2nd transition curve.The investigation on the stable running which lasted for 30 d shows that when the influent COD changes between 10 000-20 000 mg/L,the COD removal rate is more than 52%,and the B/C could be improved from 0.22 to 0.45 above.

Key words: membrane-making wastewater, aeration, micro-electrolysis, iron-carbon micro-electrolysis

中图分类号: 

• X703.1